Extech 382357 Clamp-on Ground Resistance Tester. Clamp-On Ground Resistance Tester The Extech 382357 Clamp-on Ground Resistance tester enables non-contact measurements of ground conductors without the need for auxiliary ground spikes. Comes with 9V battery, resistance check plate, metal storage case, and user manual. Additional Features Measures resistance from 0.03Ω to 1500Ω and True RMS AC Leakage current from 0.2mA to 30.00A. It features programmable datalogging with 116 points, programmable hi/lo alarms, 0.9” jaw size, self-calibration when powered on, and verification resistors to confirm the accuracy of the meter. Cat III-300V. Applications Clamp-On Ground Tester simplifies ground resistance measurements on multiple-point ground systems. Use to verify the resistance of cellular and communication tower ground grids, check utility transmission systems and grounding rods, perform maintenance on electrical transportation systems. Ideal for verifying ground systems in sub-stations, factories, and office buildings. Applications: Verify resistance of cellular and communication tower ground grids Check utility transmission systems and grounding rods Maintenance on electric transportation systems Ideal for grounding systems in sub-stations, factories and office buildings Resistance Test Frequency 1.667KHz (15mV rms approx.) Max Conductor size 0.9” (23mm) Display 4-digit (9999 count) display Sampling rate 0.4 seconds Power supply One 9V battery Power consumption 40mA Temp. Coefficient 0.15 times the specified accuracy per degree centigrade from 4 to 18°C and 28 to 50°C Current Overload Protected to 100A Continuous, 200A for less than 60 seconds (50/60Hz) Continuity check Audible tone if reading is less than approx. 40 Ω Range selection Automatic ranging Safety Meets the requirements for IEC1010-1 Category III 300V and Category II 600 V Operating conditions -20 to 50°C with < 85% RH Storage conditions -28 to 60°C with < 75% RH Dimensions 258 x 110 x 47mm Weight 700g Accessories Resistance check plate, 9V battery, carrying case
